This photo shows researchers doing field sampling of a pyrite-rich black shale outcrop in China. The weathering of such sediments, which contain sulfur originally buried from the ocean ...

The boom’s roots go back to the 1980s and to Texas, where a wildcatter named George Mitchell, facing dwindling reserves, began probing the Barnett Shale near Dallas. Black shales, the compressed ...

Octava’s two metallurgical holes confirm historical rare earth and lithium hits from Byro project’s black shale Black shale ...

Thick accumulations of petroliferous, black marine shales with interbedded, craton derived, sandstone reservoir beds are common in both basins. The surface of the Tamarugal Basin is the extremely ...